$ git clone -n https://src.fedoraproject.org/rpms/espresso.git /var/lib/mock/f39-build-2333638-59230/root/chroot_tmpdir/scmroot/espresso
Cloning into '/var/lib/mock/f39-build-2333638-59230/root/chroot_tmpdir/scmroot/espresso'...
$ git fetch origin 58c14436671a3e361e2035ae527f3d070ac46e99:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/espresso
 * [new ref]         58c14436671a3e361e2035ae527f3d070ac46e99 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58c1443 Backport fixes from rawhide