$ git clone -n https://src.fedoraproject.org/rpms/tcl-zlib.git /var/lib/mock/f42-build-3340041-41426/root/chroot_tmpdir/scmroot/tcl-zlib
Cloning into '/var/lib/mock/f42-build-3340041-41426/root/chroot_tmpdir/scmroot/tcl-zlib'...
$ git fetch origin 8e9b8ff575ebbd15163c0a6ccbec1a36bad114d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tcl-zlib
 * [new ref]         8e9b8ff575ebbd15163c0a6ccbec1a36bad114d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e9b8ff Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild