$ git clone -n https://src.fedoraproject.org/rpms/python3-exiv2.git /var/lib/mock/f40-build-2283422-55587/root/chroot_tmpdir/scmroot/python3-exiv2
Cloning into '/var/lib/mock/f40-build-2283422-55587/root/chroot_tmpdir/scmroot/python3-exiv2'...
$ git fetch origin 503cd2a07995a0cde89450cbd454de15ad9a14e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python3-exiv2
 * [new ref]         503cd2a07995a0cde89450cbd454de15ad9a14e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 503cd2a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild