$ git clone -n https://src.fedoraproject.org/rpms/sdsl-lite.git /var/lib/mock/f38-build-side-42-init-devel-1126871-30298/root/chroot_tmpdir/scmroot/sdsl-lite
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1126871-30298/root/chroot_tmpdir/scmroot/sdsl-lite'...
$ git fetch origin 5b1d98b08e350ed209b13289b89a38dd4fffabcd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sdsl-lite
 * [new ref]         5b1d98b08e350ed209b13289b89a38dd4fffabcd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b1d98b Fix for GCC-13