$ git clone -n https://src.fedoraproject.org/rpms/libexif.git /var/lib/mock/f45-build-16152-483/root/chroot_tmpdir/scmroot/libexif
Cloning into '/var/lib/mock/f45-build-16152-483/root/chroot_tmpdir/scmroot/libexif'...
$ git fetch origin 4495ac1fdc6b69789f12e9d1f1e280699aefe59c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libexif
 * [new ref]         4495ac1fdc6b69789f12e9d1f1e280699aefe59c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4495ac1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild