$ git clone -n https://src.fedoraproject.org/forks/music/rpms/sleef.git /var/lib/mock/f43-build-58885005-6569049/root/chroot_tmpdir/scmroot/sleef
Cloning into '/var/lib/mock/f43-build-58885005-6569049/root/chroot_tmpdir/scmroot/sleef'...
$ git fetch origin 41c84ed722de75e25a7611e4680c007cf4f2c853:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/music/rpms/sleef
 * [new ref]         41c84ed722de75e25a7611e4680c007cf4f2c853 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41c84ed Update to 3.9.0 (close RHBZ#2355181)