$ git clone -n https://src.fedoraproject.org/rpms/python-r128gain.git /var/lib/mock/f38-build-side-42-init-devel-840718-28411/root/chroot_tmpdir/scmroot/python-r128gain
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-840718-28411/root/chroot_tmpdir/scmroot/python-r128gain'...
$ git fetch origin 987d9e0a5c9257184858b2c32d903876c6933e4a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-r128gain
 * [new ref]         987d9e0a5c9257184858b2c32d903876c6933e4a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 987d9e0 Initial import (fedora#2163518)