$ git clone -n https://src.fedoraproject.org/rpms/baresip.git /var/lib/mock/f41-build-1144076-21146/root/chroot_tmpdir/scmroot/baresip
Cloning into '/var/lib/mock/f41-build-1144076-21146/root/chroot_tmpdir/scmroot/baresip'...
$ git fetch origin de6ee91aef8ec09e2e34d000243c985cdbf30c3f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/baresip
 * [new ref]         de6ee91aef8ec09e2e34d000243c985cdbf30c3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de6ee91 Upgrade to 3.12.1 (#2283595)