$ git clone -n https://src.fedoraproject.org/rpms/massif-visualizer.git /var/lib/mock/eln-build-side-114545-60918068-6585772/root/chroot_tmpdir/scmroot/massif-visualizer
Cloning into '/var/lib/mock/eln-build-side-114545-60918068-6585772/root/chroot_tmpdir/scmroot/massif-visualizer'...
$ git fetch origin b4ca8d77af72ab930dc9d2739b128059c65c08bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/massif-visualizer
 * [new ref]         b4ca8d77af72ab930dc9d2739b128059c65c08bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4ca8d7 25.04.3