$ git clone -n https://src.fedoraproject.org/rpms/baresip.git /var/lib/mock/f39-build-1775303-41512/root/chroot_tmpdir/scmroot/baresip
Cloning into '/var/lib/mock/f39-build-1775303-41512/root/chroot_tmpdir/scmroot/baresip'...
$ git fetch origin a2f2542587aa0fd3abe5aeb9b912f2dba29d2525:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/baresip
 * [new ref]         a2f2542587aa0fd3abe5aeb9b912f2dba29d2525 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2f2542 Upgrade to 3.6.0 (#2244802)