$ git clone -n https://src.fedoraproject.org/rpms/rubygem-loofah.git /var/lib/mock/f39-build-1499353-34744/root/chroot_tmpdir/scmroot/rubygem-loofah
Cloning into '/var/lib/mock/f39-build-1499353-34744/root/chroot_tmpdir/scmroot/rubygem-loofah'...
$ git fetch origin 9dc3f849ca4a36a86ca32a58d4d786e5b53f04d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-loofah
 * [new ref]         9dc3f849ca4a36a86ca32a58d4d786e5b53f04d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9dc3f84 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild