$ git clone -n https://src.fedoraproject.org/rpms/SILLY.git /var/lib/mock/f39-build-1470194-33883/root/chroot_tmpdir/scmroot/SILLY
Cloning into '/var/lib/mock/f39-build-1470194-33883/root/chroot_tmpdir/scmroot/SILLY'...
$ git fetch origin 1c2c23c309c7189e7de5392635f91dc9f753e9db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/SILLY
 * [new ref]         1c2c23c309c7189e7de5392635f91dc9f753e9db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c2c23c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild