$ git clone -n https://src.fedoraproject.org/rpms/alexandria.git /var/lib/mock/f38-build-side-42-init-devel-649385-26471/root/chroot_tmpdir/scmroot/alexandria
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-649385-26471/root/chroot_tmpdir/scmroot/alexandria'...
$ git fetch origin 5cc7e2cad243161a6f47848bde2d03104b895200:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/alexandria
 * [new ref]         5cc7e2cad243161a6f47848bde2d03104b895200 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5cc7e2c Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild