$ git clone -n https://src.fedoraproject.org/rpms/migemo.git /var/lib/mock/f39-build-1576324-37942/root/chroot_tmpdir/scmroot/migemo
Cloning into '/var/lib/mock/f39-build-1576324-37942/root/chroot_tmpdir/scmroot/migemo'...
$ git fetch origin 4ed9c3fc0077788f56ca47dd1815a61fad75537c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/migemo
 * [new ref]         4ed9c3fc0077788f56ca47dd1815a61fad75537c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ed9c3f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild