$ git clone -n https://src.fedoraproject.org/rpms/soundtracker.git /var/lib/mock/f45-build-36255-702/root/chroot_tmpdir/scmroot/soundtracker
Cloning into '/var/lib/mock/f45-build-36255-702/root/chroot_tmpdir/scmroot/soundtracker'...
$ git fetch origin 0a394612deae2f29481ceb88ec90e3b3984827e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/soundtracker
 * [new ref]         0a394612deae2f29481ceb88ec90e3b3984827e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a39461 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild