$ git clone -n https://git.centos.org/rpms/gdm /var/lib/mock/dist-c8-stream-build-75377-26082/root/chroot_tmpdir/scmroot/gdm
Cloning into '/var/lib/mock/dist-c8-stream-build-75377-26082/root/chroot_tmpdir/scmroot/gdm'...
$ git reset --hard imports/c8s/gdm-40.0-12.el8
HEAD is now at 18ca793 import gdm-40.0-12.el8