$ git clone -n https://src.fedoraproject.org/rpms/tcl-tcludp.git /var/lib/mock/f40-build-730666-103578/root/chroot_tmpdir/scmroot/tcl-tcludp
Cloning into '/var/lib/mock/f40-build-730666-103578/root/chroot_tmpdir/scmroot/tcl-tcludp'...
$ git fetch origin f6f2be49e0a5e84d544edc656d8d0c1b9d3e90bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tcl-tcludp
 * [new ref]         f6f2be49e0a5e84d544edc656d8d0c1b9d3e90bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6f2be4 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild