$ git clone -n https://src.fedoraproject.org/rpms/nginx-mod-vts.git /var/lib/mock/f39-build-1491126-34516/root/chroot_tmpdir/scmroot/nginx-mod-vts
Cloning into '/var/lib/mock/f39-build-1491126-34516/root/chroot_tmpdir/scmroot/nginx-mod-vts'...
$ git fetch origin ec4cd2c7dc0dd735193e752870c687ba63968a1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nginx-mod-vts
 * [new ref]         ec4cd2c7dc0dd735193e752870c687ba63968a1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec4cd2c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild