$ git clone -n https://src.fedoraproject.org/rpms/opensips.git /var/lib/mock/f45-build-21098-578/root/chroot_tmpdir/scmroot/opensips
Cloning into '/var/lib/mock/f45-build-21098-578/root/chroot_tmpdir/scmroot/opensips'...
$ git fetch origin c2c1d7aeba42b7a5b320f73079ba496c1ab38288:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opensips
 * [new ref]         c2c1d7aeba42b7a5b320f73079ba496c1ab38288 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2c1d7a README changes