$ git clone -n https://src.fedoraproject.org/rpms/borgbackup.git /var/lib/mock/f39-build-2010811-45640/root/chroot_tmpdir/scmroot/borgbackup
Cloning into '/var/lib/mock/f39-build-2010811-45640/root/chroot_tmpdir/scmroot/borgbackup'...
$ git fetch origin 49b4924ef7098516fe5e9d9ee9f6e071e6b4ad0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/borgbackup
 * [new ref]         49b4924ef7098516fe5e9d9ee9f6e071e6b4ad0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49b4924 update to 1.2.7