$ git clone -n https://src.fedoraproject.org/rpms/g4music.git /var/lib/mock/f40-build-2211754-52225/root/chroot_tmpdir/scmroot/g4music
Cloning into '/var/lib/mock/f40-build-2211754-52225/root/chroot_tmpdir/scmroot/g4music'...
$ git fetch origin 3b8313f5e8bcf3ae15c4b928bee55827ca541f0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/g4music
 * [new ref]         3b8313f5e8bcf3ae15c4b928bee55827ca541f0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b8313f Initial RPM