$ git clone -n https://src.fedoraproject.org/rpms/python-yattag.git /var/lib/mock/f45-build-33754-674/root/chroot_tmpdir/scmroot/python-yattag
Cloning into '/var/lib/mock/f45-build-33754-674/root/chroot_tmpdir/scmroot/python-yattag'...
$ git fetch origin 12f891b239fe15f3810ff4fe7800f3be2cfe24c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-yattag
 * [new ref]         12f891b239fe15f3810ff4fe7800f3be2cfe24c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 12f891b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild