$ git clone -n https://src.fedoraproject.org/rpms/libecpg.git /var/lib/mock/f45-build-16137-483/root/chroot_tmpdir/scmroot/libecpg
Cloning into '/var/lib/mock/f45-build-16137-483/root/chroot_tmpdir/scmroot/libecpg'...
$ git fetch origin 2f84d54ea8b1ac7b8192a80572d457882c99005e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libecpg
 * [new ref]         2f84d54ea8b1ac7b8192a80572d457882c99005e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f84d54 Use CentOS Stream test repository instead of Fedora