$ git clone -n https://src.fedoraproject.org/rpms/python-osa.git /var/lib/mock/f45-build-31867-656/root/chroot_tmpdir/scmroot/python-osa
Cloning into '/var/lib/mock/f45-build-31867-656/root/chroot_tmpdir/scmroot/python-osa'...
$ git fetch origin acd4fbc846e185afc61aaf8e4837dccd61312545:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-osa
 * [new ref]         acd4fbc846e185afc61aaf8e4837dccd61312545 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acd4fbc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild