$ git clone -n https://src.fedoraproject.org/rpms/python-fastpurge.git /var/lib/mock/f45-build-30616-646/root/chroot_tmpdir/scmroot/python-fastpurge
Cloning into '/var/lib/mock/f45-build-30616-646/root/chroot_tmpdir/scmroot/python-fastpurge'...
$ git fetch origin bcb222ead4c663af18202b2055355d81bfa67df2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fastpurge
 * [new ref]         bcb222ead4c663af18202b2055355d81bfa67df2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bcb222e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild