$ git clone -n https://src.fedoraproject.org/rpms/grantleetheme.git /var/lib/mock/f42-build-side-1-3584336-46893/root/chroot_tmpdir/scmroot/grantleetheme
Cloning into '/var/lib/mock/f42-build-side-1-3584336-46893/root/chroot_tmpdir/scmroot/grantleetheme'...
$ git fetch origin 5a1a9da1d877576aacc106fe2e1717530630c1b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grantleetheme
 * [new ref]         5a1a9da1d877576aacc106fe2e1717530630c1b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a1a9da 25.04.3