$ git clone -n https://src.fedoraproject.org/rpms/kf5-kdeclarative.git /var/lib/mock/f39-build-1654710-40532/root/chroot_tmpdir/scmroot/kf5-kdeclarative
Cloning into '/var/lib/mock/f39-build-1654710-40532/root/chroot_tmpdir/scmroot/kf5-kdeclarative'...
$ git fetch origin 2c4120201112f5a2e64e0bb76e82cd08a2a0ccd6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kdeclarative
 * [new ref]         2c4120201112f5a2e64e0bb76e82cd08a2a0ccd6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c41202 5.111.0