$ git clone -n https://src.fedoraproject.org/rpms/python-capturer.git /var/lib/mock/f45-build-29804-641/root/chroot_tmpdir/scmroot/python-capturer
Cloning into '/var/lib/mock/f45-build-29804-641/root/chroot_tmpdir/scmroot/python-capturer'...
$ git fetch origin be0077cf3d46fd128196389ebe395c51f83c41eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-capturer
 * [new ref]         be0077cf3d46fd128196389ebe395c51f83c41eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be0077c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild