$ git clone -n https://src.fedoraproject.org/rpms/gawk-errno.git /var/lib/mock/f40-build-2253319-54210/root/chroot_tmpdir/scmroot/gawk-errno
Cloning into '/var/lib/mock/f40-build-2253319-54210/root/chroot_tmpdir/scmroot/gawk-errno'...
$ git fetch origin 7474275001badb110298191fa89a3b1127d5478a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gawk-errno
 * [new ref]         7474275001badb110298191fa89a3b1127d5478a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7474275 Upgrade to new upstream release 1.1.1