$ git clone -n https://src.fedoraproject.org/rpms/age.git /var/lib/mock/f39-build-1507964-35322/root/chroot_tmpdir/scmroot/age
Cloning into '/var/lib/mock/f39-build-1507964-35322/root/chroot_tmpdir/scmroot/age'...
$ git fetch origin 543fb82c7bff72b80a763c9534820ba9402d1d18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/age
 * [new ref]         543fb82c7bff72b80a763c9534820ba9402d1d18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 543fb82 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild