$ git clone -n https://src.fedoraproject.org/rpms/mcrypt.git /var/lib/mock/f41-build-750958-13388/root/chroot_tmpdir/scmroot/mcrypt
Cloning into '/var/lib/mock/f41-build-750958-13388/root/chroot_tmpdir/scmroot/mcrypt'...
$ git fetch origin cfadc8c0fe37d067471feac2c9845918105b964f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mcrypt
 * [new ref]         cfadc8c0fe37d067471feac2c9845918105b964f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfadc8c Eliminate use of obsolete %patchN syntax (#2283636)