$ git clone -n https://src.fedoraproject.org/rpms/beep.git /var/lib/mock/f39-build-1621492-38723/root/chroot_tmpdir/scmroot/beep
Cloning into '/var/lib/mock/f39-build-1621492-38723/root/chroot_tmpdir/scmroot/beep'...
$ git fetch origin 1cb1544375936c1c444f5cc51032b8b4e683a3bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/beep
 * [new ref]         1cb1544375936c1c444f5cc51032b8b4e683a3bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1cb1544 On EL7, use #!/bin/sed instead of #!/usr/bin/sed