$ git clone -n https://src.fedoraproject.org/rpms/meanwhile.git /var/lib/mock/f39-build-1469945-33870/root/chroot_tmpdir/scmroot/meanwhile
Cloning into '/var/lib/mock/f39-build-1469945-33870/root/chroot_tmpdir/scmroot/meanwhile'...
$ git fetch origin 3106211c8838ed212373ea2ad4574812fa77e4c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/meanwhile
 * [new ref]         3106211c8838ed212373ea2ad4574812fa77e4c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3106211 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild