$ git clone -n https://src.fedoraproject.org/rpms/mate-session-manager.git /var/lib/mock/f41-build-59075927-6570868/root/chroot_tmpdir/scmroot/mate-session-manager
Cloning into '/var/lib/mock/f41-build-59075927-6570868/root/chroot_tmpdir/scmroot/mate-session-manager'...
$ git fetch origin b11005e8c0710fe874ba0853593e79f24b4778a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mate-session-manager
 * [new ref]         b11005e8c0710fe874ba0853593e79f24b4778a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b11005e Use g_info() for 'screensaver left the bus' message