$ git clone -n https://src.fedoraproject.org/rpms/mingw-exiv2.git /var/lib/mock/f45-build-18419-515/root/chroot_tmpdir/scmroot/mingw-exiv2
Cloning into '/var/lib/mock/f45-build-18419-515/root/chroot_tmpdir/scmroot/mingw-exiv2'...
$ git fetch origin 9075b6c4cb2db014742e1846c0c27f58bd9b0f37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-exiv2
 * [new ref]         9075b6c4cb2db014742e1846c0c27f58bd9b0f37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9075b6c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild