$ git clone -n https://src.fedoraproject.org/rpms/axmail.git /var/lib/mock/f42-build-3426248-45168/root/chroot_tmpdir/scmroot/axmail
Cloning into '/var/lib/mock/f42-build-3426248-45168/root/chroot_tmpdir/scmroot/axmail'...
$ git fetch origin 7607c6de98e90fa91b4e6bba12dd4a2f798876fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/axmail
 * [new ref]         7607c6de98e90fa91b4e6bba12dd4a2f798876fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7607c6d Add explicit BR: libxcrypt-devel