$ git clone -n https://src.fedoraproject.org/rpms/microcode_ctl.git /var/lib/mock/f41-build-852244-166295/root/chroot_tmpdir/scmroot/microcode_ctl
Cloning into '/var/lib/mock/f41-build-852244-166295/root/chroot_tmpdir/scmroot/microcode_ctl'...
$ git fetch origin 938b41899dba9e0bf402687d5a640f6a4b4be00e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/microcode_ctl
 * [new ref]         938b41899dba9e0bf402687d5a640f6a4b4be00e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 938b418 Add the documentation directory to the list of files